package com.kcwx.common.utils;

import java.lang.management.ManagementFactory;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 时间工具类
 * 
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
	public static String YYYY = "yyyy";

	public static String YYYY_MM = "yyyy-MM";

	public static String YYYY_MM_DD = "yyyy-MM-dd";

	public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

	public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

	private static String[] parsePatterns = { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
			"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM", "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss",
			"yyyy.MM.dd HH:mm", "yyyy.MM" };

	/**
	 * 获取当前Date型日期
	 * 
	 * @return Date() 当前日期
	 */
	public static Date getNowDate() {
		return new Date();
	}

	/**
	 * 获取当前日期, 默认格式为yyyy-MM-dd
	 * 
	 * @return String
	 */
	public static String getDate() {
		return dateTimeNow(YYYY_MM_DD);
	}

	public static final String getTime() {
		return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
	}

	public static final String dateTimeNow() {
		return dateTimeNow(YYYYMMDDHHMMSS);
	}

	public static final String dateTimeNow(final String format) {
		return parseDateToStr(format, new Date());
	}

	public static final String dateTime(final Date date) {
		return parseDateToStr(YYYY_MM_DD, date);
	}

	public static final String parseDateToStr(final String format, final Date date) {
		return new SimpleDateFormat(format).format(date);
	}

	public static final Date dateTime(final String format, final String ts) {
		try {
			return new SimpleDateFormat(format).parse(ts);
		} catch (ParseException e) {
			throw new RuntimeException(e);
		}
	}

	/**
	 * 日期路径 即年/月/日 如2018/08/08
	 */
	public static final String datePath() {
		Date now = new Date();
		return DateFormatUtils.format(now, "yyyy/MM/dd");
	}

	/**
	 * 日期路径 即年/月/日 如20180808
	 */
	public static final String dateTime() {
		Date now = new Date();
		return DateFormatUtils.format(now, "yyyyMMdd");
	}

	/**
	 * 日期型字符串转化为日期 格式
	 */
	public static Date parseDate(Object str) {
		if (str == null) {
			return null;
		}
		try {
			return parseDate(str.toString(), parsePatterns);
		} catch (ParseException e) {
			return null;
		}
	}

	/**
	 * 获取服务器启动时间
	 */
	public static Date getServerStartDate() {
		long time = ManagementFactory.getRuntimeMXBean().getStartTime();
		return new Date(time);
	}

	/**
	 * 计算相差天数
	 */
	public static int differentDaysByMillisecond(Date date1, Date date2) {
		return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
	}

	/**
	 * 计算两个时间差
	 */
	public static String getDatePoor(Date endDate, Date nowDate) {
		long nd = 1000 * 24 * 60 * 60;
		long nh = 1000 * 60 * 60;
		long nm = 1000 * 60;
		// long ns = 1000;
		// 获得两个时间的毫秒时间差异
		long diff = endDate.getTime() - nowDate.getTime();
		// 计算差多少天
		long day = diff / nd;
		// 计算差多少小时
		long hour = diff % nd / nh;
		// 计算差多少分钟
		long min = diff % nd % nh / nm;
		// 计算差多少秒//输出结果
		// long sec = diff % nd % nh % nm / ns;
		return day + "天" + hour + "小时" + min + "分钟";
	}

	/**
	 * 增加 LocalDateTime ==> Date
	 */
	public static Date toDate(LocalDateTime temporalAccessor) {
		ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
		return Date.from(zdt.toInstant());
	}

	/**
	 * 增加 LocalDate ==> Date
	 */
	public static Date toDate(LocalDate temporalAccessor) {
		LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
		ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
		return Date.from(zdt.toInstant());
	}

	public static String getYesterday() {
		Calendar cal = Calendar.getInstance();
		cal.add(Calendar.DATE, -1);
		Date d = cal.getTime();
		SimpleDateFormat sp = new SimpleDateFormat("yyyyMMdd");
		String yesterday = sp.format(d);// 获取昨天日期
		return yesterday;
	}

	public static int getNowHour() {
		String hour = dateTimeNow("HH");
		return Integer.parseInt(hour);
	}

	/**
	 * 计算两个时间差
	 */
	public static String getTimePoor(long startTime) {
		long nowTime = System.currentTimeMillis();
		return (nowTime - startTime) / 1000 + "秒";
	}
	
	public static List<String> getDayList(String startDay, String endDay) {
		List<String> dayList = new ArrayList<>();
		try {
			DateFormat dft = new SimpleDateFormat("yyyyMMdd");
			Date star = dft.parse(startDay);// 开始时间
			Date end = dft.parse(endDay);// 结束时间
			Date nextDay = star;
			int i = 0;
			dayList.add(0, startDay);
			while (nextDay.before(end)) {// 当明天不在结束时间之前是终止循环
				Calendar cld = Calendar.getInstance();
				cld.setTime(star);
				cld.add(Calendar.DATE, 1);
				star = cld.getTime();
				// 获得下一天日期字符串
				nextDay = star;
				i++;
				dayList.add(i, dft.format(nextDay));
			}
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return dayList;
	}
	
	public static String getTheDayBeforeYesterday() {
		Calendar cal = Calendar.getInstance();
		cal.add(Calendar.DATE, -2);
		Date d = cal.getTime();
		SimpleDateFormat sp = new SimpleDateFormat("yyyyMMdd");
		String yesterday = sp.format(d);// 获取昨天日期
		return yesterday;
	}
	
	/**
	 * 15天内的日期
	 * 
	 * @author phx
	 * @date 2023年7月10日 上午10:08:31
	 * @param
	 * @return List<String>
	 */
	public static List<String> getDayList() {
		List<String> list = new ArrayList<>();
		for (int i = -15; i <= -1; i++) {
			Calendar cal = Calendar.getInstance();
			cal.add(Calendar.DATE, i);
			Date d = cal.getTime();
			SimpleDateFormat sp = new SimpleDateFormat("yyyyMMdd");
			String day = sp.format(d);// 获取昨天日期
			list.add(day);
			System.out.println(day);
		}
		return list;
	}
	
	public static int getDifferentDays(String startDay, String endDay) {
		int i = 1;
		try {
			DateFormat dft = new SimpleDateFormat("yyyyMMdd");
			Date star = dft.parse(startDay);// 开始时间
			Date end = dft.parse(endDay);// 结束时间
			Date nextDay = star;
			while (nextDay.before(end)) {// 当明天不在结束时间之前是终止循环
				Calendar cld = Calendar.getInstance();
				cld.setTime(star);
				cld.add(Calendar.DATE, 1);
				star = cld.getTime();
				// 获得下一天日期字符串
				nextDay = star;
				i++;
			}
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return i;
	}
}
